TW201305026A - Folding container - Google Patents

Abstract

Disclosed herein is a folding container which stores various kinds of cargo and is transported. A container body of the folding container includes a top plate, a bottom plate, left and right side plates, and front and rear end plates. Each side plate includes upper and lower plate bodies which are connected to each other and to the top and bottom plates by spring hinges. A rotating shaft is provided in the container body, and a belt connected to the rotating shaft is connected to the left and right side plates at positions adjacent to the junctions between the upper and lower plate bodies. The left and right side plates are pulled inwards and folded by rotating the rotating shaft and winding the belt around the rotating shaft. Therefore, the operation of folding or unfolding the container body can be facilitated, and safety can be ensured during the operation.

Description

Foldable container

The present invention generally relates to a container in which various goods are stored and transported by boat or the like, and more particularly, the present invention generally relates to a collapsible container that is configured such that a small number of workers can be easily folded using a folding mechanism Or the container body is unfolded in order to carry the container and optimize the space utilization, and the container has better durability, and the container can be safely used because the container body can be reliably held in the folded and unfolded state.

Typically, containers are used to transport various goods by boat or the like when, for example, for export or import for trade purposes.

In the conventional art, such a container has a rectangular box shape.

In the case of a conventional container, when there is no cargo in the container in time, the empty container must also be transported in the shape of a rectangular box. Therefore, the space utilization rate is low, thereby increasing the distribution cost.

In order to overcome the above problems, various collapsible containers have been proposed which can be stored and transported in a folded state when these collapsible containers are empty.

In particular, in the Korean Patent No. 10-638570, filed by the applicant of the present invention, the collapsible container includes a container body in which a loading space is defined. The container body includes a top plate, a bottom plate, a left side plate and a right side plate, and a front end plate and a rear end plate. The left side panel and the right side panel are vertically disposed on opposite sides between the top panel and the bottom panel. Each of the left side plate and the right side plate includes an upper plate body and a lower plate body, and the upper plate body and the lower plate body of the left side plate and the upper plate body and the lower plate body of the right side plate are connected to each other by a spring hinge and connected to the container On the top plate and the bottom plate in the longitudinal direction, the spring hinge is disposed outside the upper plate body and the lower plate body and inside the upper and lower ends of the upper plate body and the lower plate body. Therefore, the upper and lower plates can be folded inwardly toward each other. The front end panel and the rear end panel are respectively coupled to the front and rear edges of the bottom panel by a bottom hinge so as to be rotatable and foldable inward or outward. Further, the upper and right side plates of the left and right side plates, the lower and left side plates of the left and right side plates, and the top and front and rear end plates are each locked or unlocked by a catch clamp. Each of the clips includes a clip portion and a latch, and the clip portion and the latch are disposed opposite each other at respective positions. The clip has a locking hook that is configured to be rotatable about an axis such that the latch is releasably locked to the latch.

In the technique disclosed in the above-mentioned registered patent, when there is no cargo in the container body, the front end plate and the rear end plate of the container body can be folded inwardly in such a manner as to face each other and the upper plate body and the lower side plate of the left side plate and the right side plate The plates can be folded inwardly in such a way as to face each other. The container body is stored and transported in a folded state to increase space utilization, and thus reduce distribution costs.

However, this technique developed by the applicant of the present invention has the following problems.

First, in order to elastically unfold the upper and lower plates of the left and right side panels of the container body in a folded state, the spring force of the spring hinge must be sufficiently large. However, when the spring force of the spring hinge is large, it becomes difficult to fold the upper and lower plates of the left and right side plates due to the large elastic force of the spring hinge.

In particular, since the folding operation is manually performed by the worker, it is very difficult for a small number of workers to fold the container body, thereby increasing safety considerations.

Second, the top plate, the left side plate, the right side plate, and the bottom plate of the container body are connected and fastened to each other only by spring hinges. In view of grasping, lifting and moving the corner casting provided at each corner of the top plate by the container handling tool, the durability of the container body with respect to the vertical or horizontal direction is lowered.

In particular, the spring hinges have the same structure and each spring hinge has only one torsion coil spring. Therefore, the spring force of each spring hinge is insufficient. Therefore, a relatively large number of spring hinges are required to smoothly unfold the container body. Further, a spring hinge that is rotated to 90° and installed between the top plate and the upper plate of the left and right side plates and between the bottom plate and the lower plate of the left and right side plates is rotated to 180° and mounted on the left side plate The spring hinge between the upper plate and the lower plate of the right side plate has the same structure. Therefore, a portion where the elastic durability of the torsion spring of the spring hinge is weak may occur.

Third, in each spring hinge, the legs of each torsion coil spring protrude upward or downward from the surface of the spring hinge body. Therefore, in order to prevent the legs from interfering with other elements, grooves are formed in the upper and lower portions of the spring hinge body, and the legs of the torsion spring are placed in the corresponding grooves. However, since the torsion coil spring is twisted when the container body is folded, the leg of the torsion coil spring must move along the length of the spring, but the leg of the torsion coil spring cannot move. Therefore, the load applied to the torsion coil spring is increased, thereby reducing the durability of the spring hinge.

Fourth, after folding the top plate, the left side plate, the right side plate and the bottom plate of the container body, and the double locking hooks of the clips disposed on the bottom plate are locked to the bolts of the corresponding clips disposed on the top plate, thereby The container body remains folded. In this state, when the double hook is unlocked to unfold the container body, it is difficult to remove the bottom plate, the left side plate, and the right side plate from the spring by the spring force of the spring hinge. Double hinge.

Fifth, the double locking hook of each clip includes two unique locking hooks that are connected to each other. The double locking hook is elastically biased upward by the spring force of the coil spring to prevent the double locking hook from sagging to contact the ground. More specifically, the double locking hook can be bent and inserted between the left side panel and the right side panel, thus obstructing the folding of the container body.

Sixth, when the first one of the folded left side panel and the right side panel of the container body is unfolded after the second of the folded left side panel and the right side panel of the container body is unfolded, the second side panel may face the first The one side panel is bent rather than maintained in a vertical state, and the first side panel and the top panel can be tilted toward the worker, thereby endangering worker safety. Seventh, the top plate, the left side plate, the right side plate, and the bottom plate of the container body are inclined at a predetermined angle with respect to each other to prevent rainwater from entering the container body. However, since the joint between the top plate, the right side plate, the right side plate and the bottom plate of the container body has no sealing structure, the ability to seal the container body is remarkably low.

In order to solve the above problems, the applicant of the present invention has worked hard to make various improvements to the defective portion of the conventional technique proposed by the applicant of the present invention, thereby providing a collapsible container of improved quality.

Accordingly, the present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide a collapsible container which can store various goods and be transported by ship or the like, in which a small number of workers can be easily folded or unfolded using a folding mechanism. The container body thus facilitates the transport of the container and optimizes the use space, and since the container body can be reliably held in a folded or unfolded state, the foldable container has better durability and can be used safely.

Another object of the present invention is to provide a collapsible container in which the top plate, the left side plate, the right side plate and the bottom plate of the container body are vertically unfolded, not only by spring hinges but also connected to each other by a connecting bracket, so that Even when the corner castings provided at the respective corners of the top plate are grasped, lifted, and moved by the container transporter, the durability of the container body in the vertical or horizontal direction can be remarkably improved.

Another object of the present invention is to provide a collapsible container in which the cross-sectional structure of the wire of the spring is improved and the number of torsion coil springs of the spring hinge or the number of turns of the wire of each torsion coil spring is The difference in the applied load varies, for example, the number of torsion springs of the spring hinges rotated to 180° and mounted between the upper and lower plates of the left and right side plates or the wire of each torsion coil spring The number of turns is greater than the number or each of the torsion springs of the spring hinge that is rotated to 90° and is mounted between the top plate and the upper plate of the left and right side plates and between the lower and upper plates of the left and right side plates By twisting the number of turns of the coil of the coil spring, the number of torsion coil springs is increased as compared with the prior art, thereby improving the durability of the container body, and the container body can be more easily deployed by the increased spring force of the spring hinge. .

Another object of the present invention is to provide a collapsible container in which each spring hinge has a guide recess so that the guide recess guides the torsion coil spring when each torsion coil spring is twisted The relative movement of the opposing legs and the prevention of the opposing legs from protruding out of the spring hinge improves the operational efficiency and durability of the container.

Another object of the present invention is to provide a collapsible container in which the double latches of the clips disposed at the bottom are locked on respective latches provided on the top panel to hold the container body in a folded state. In the state, before the double hook of the clip is unlocked from the latch, the top plate and the bottom plate are connected to each other by a separate holding rod, so that the operation of unlocking the double hook from the bolt can be realized regardless of the elastic force of the spring hinge, And in this case each double hook of the clip is supported by a separate support pin to inhibit the double hook from rotating upwards or downwards, thus, unlike the prior art, the double hook is prevented from being on the corresponding side or side panel The lower end of the latch is caught between the bottom plate and the bottom plate and the right side plate are smoothly operated. Another object of the present invention is to provide a collapsible container in which the first one of the folded left and right side panels is vertically unfolded after the second of the folded left and right side panels When unfolded, the second side panel is held in a vertically unfolded state by the clips and the attachment brackets belonging to the second side panel to prevent the second side panel in the vertically unfolded state from being bent and inclined toward the first side panel, and preventing the first one The side panels are deflected toward the worker to achieve deployment and provide security.

Another object of the present invention is to provide a collapsible container in which a silicone filler fills a joint between an upper plate and a lower plate of a top plate, a bottom plate, a left side plate, and a right side plate, thereby enhancing sealing Ability and prevent water from entering. Another object of the present invention is to provide a foldable container in which guide surfaces are formed on a front end plate and a rear end plate of a container body to guide the entry of the vehicle when the vehicle is loaded into the container body, thereby realizing the operation of loading the vehicle, and Separate doors are provided in each of the left and right side panels in the collapsible container to enable workers to easily access the container body.

To achieve the above object, the present invention provides a collapsible container comprising: a container body defining a loading space therein, the container body comprising: a top plate, a bottom plate, a left side plate and a right side plate, the left side plate and The right side plate is vertically disposed on an opposite side between the top plate and the bottom plate, and each of the left side plate and the right side plate includes an upper plate body and a lower plate body, and the upper plate body and the lower plate body pass Spring hinges are connected to and connected to the top plate and the bottom plate along the length direction of the container body, the spring hinge being disposed on an outer portion between the upper plate body and the lower plate body and the upper portion An upper end of the plate body and an inner portion of the lower end of the lower plate body such that the upper plate body and the lower plate body can be folded inwardly toward each other, and the front end plate and the rear end plate, the front end plate and The rear end plates are respectively connected to the front and rear edges of the bottom plate by a bottom hinge so as to be rotatable and foldable inward or outward; at least one clip disposed on the top plate and the left side plate and the Between the upper plate body of the right side plate, the left side plate and the lower plate body of the right side plate and the bottom plate, and the top plate and the front end plate and the rear end plate Each connection between the two to releasably lock the associated pair of elements to each other, the clip comprising: a clip and a latch, the clip and the latch being disposed facing each other corresponding to each other Position, the clip has a locking hook, the hook is configured to be rotatable about an axis such that the hook is releasably locked to the latch; and a side panel folding mechanism including a rotating shaft, the rotation a shaft rotatably mounted in the container body along a length direction of the container body, the rotation shaft being connected to the upper plate body or the lower plate body of the left side plate and the right side plate by a belt Connected so that when the rotating shaft rotates to wind the belt around the rotating shaft, the upper plate and the lower plate of the left side plate and the right side plate are pulled inwardly and folded.

The rotating shaft of the side panel folding mechanism may include a rotating shaft rotatably mounted at an intermediate position of a top portion of the container body along a length direction of the container body, wherein the left side belt and the right side belt first end Winding in the opposite direction about the rotating shaft, and the left side belt and the second side end of the right side belt are respectively at a joint between the upper plate body and the lower plate body and the left side plate Connecting to the right side plate, therefore, when the rotating shaft rotates to simultaneously wrap the left side belt and the right side belt around the rotating shaft, simultaneously pull inwardly and fold the left side panel and the right side The middle of the board.

The rotating shaft of the side panel folding mechanism may include a rotating shaft rotatably mounted at a center position of a bottom portion of the container body along a length direction of the container body, wherein the left side belt and the right side belt first end Winding in the opposite direction about the rotating shaft, and the left side belt and the second side end of the right side belt are respectively at a joint between the upper plate body and the lower plate body and the left side plate Connecting to the right side plate, therefore, when the rotating shaft rotates to simultaneously wrap the left side belt and the right side belt around the rotating shaft, simultaneously pull inwardly and fold the left side panel and the right side The middle of the board.

The rotating shaft of the side panel folding mechanism may include a rotating shaft that is rotatably mounted on an upper portion or a lower portion of both sides of the container body in a longitudinal direction of the container body, wherein the left side belt and a first end of the right side strap is coupled to the rotating shaft, and a second end of each of the left side strap and the right side strap is on the upper panel of the respective side panel and the a joint between the lower plates is connected to one of the opposite left side plates and the right side plates such that the left side belt and the right side belt form an "X" shape, so that when the rotating shaft rotates to When the respective rotating shaft wraps around the left side belt and the right side belt, the inner side of the left side panel and the right side panel are simultaneously pulled and folded.

The rotating shaft of the side panel folding mechanism may include a rotating shaft respectively rotatably mounted on an upper portion or a lower portion of two side walls of the container body along a longitudinal direction of the container body, wherein the left side belt and the right side a first end of the belt is coupled to the respective axis of rotation, and the second end of each of the left side belt and the right side belt is in the upper and lower plates of the respective side panels An intermediate connection is coupled to one of the opposite left side panel and the right side panel such that the left side strap and the right side strap form an "X" shape, such that when the rotating shaft rotates to surround the corresponding When the rotating shaft winds the belt on the left side and the belt on the right side, it simultaneously pulls inward and folds the middle portions of the left side panel and the right side panel.

The rotating shaft of the side panel folding mechanism may include a rotating shaft rotatably mounted on an upper or lower portion of one of the side walls of the container body along a length direction of the container body, wherein the first end of the belt Connected to the rotating shaft, and the second end of the belt is horizontally connected to the left side plate or the right side plate opposite to the rotating shaft, and thus, when the rotating shaft rotates around the rotating shaft When the tape is wound, the inner portion of the left side panel and the right side panel are pulled inwardly and folded.

The side panel folding mechanism may include: a ratchet gear mounted on the rotating shaft; a ratchet pawl disposed at a predetermined position adjacent to the ratchet gear such that the ratchet pawl can be wound around the hinge Rotating, the ratchet pawl resiliently contacts the ratchet gear by a compression spring such that the ratchet gear is releasably locked to the ratchet pawl; and a stop member disposed with the ratchet pawl Adjacent predetermined positions, the stopper retractably protrudes to selectively support the ratchet pawl such that the ratchet gear is selectively retained in a state of being unlocked from the ratchet pawl to allow The strip is selectively released from the rotating shaft.

Further, the bobbin may be mounted and fastened by the key on the rotating shaft such that the belt is wound around the bobbin.

Further, a polygonal protrusion may be disposed at one end of the rotating shaft and inserted into the through hole formed in the container body such that the polygonal protrusion extends out of the container body through the through hole, wherein the ratchet handle Having a wrench hole that is coupled to the rotating shaft by inserting the polygonal protrusion into the wrench hole so as to be able to rotate by the ratchet handle outside the container body Rotating the rotating shaft.

Preferably, an inverted U-shaped hook may be coupled to the second end of the belt, and the buckle may be disposed at a joint between the upper plate and the lower plate of the side plate on the corresponding side plate Adjacent positions such that the inverted U-shaped hook of the belt is removably hooked on the buckle.

Each of the spring hinges may include an upper mounting piece and a lower mounting piece, the upper mounting piece and the lower mounting piece being rotatably coupled to each other by a shaft pin, around which the at least one torsion coil spring is fitted, wherein the guiding recessed portion Formed on the outer surface of the mounting piece in such a manner as to face each other such that opposite legs of the torsion coil spring are located in the guiding recess and are guided by the guiding recess to prevent when the leg is When the torsion coil spring is twisted and moved in the axial direction, the leg protrudes out of the mounting piece.

Each of the spring hinges may be disposed such that the number of the torsion coil springs differs depending on a load applied to the spring hinge, wherein each is rotated to 180° and mounted on the left side plate and the The number of torsion springs of the spring hinge between the upper plate body and the lower plate body of the right side plate is greater than each rotated to 90° and mounted on the top plate and the left side plate and the right side plate The number of torsion springs between the upper plates and between the bottom plates and the lower plates of the left and right side plates.

Each of the spring hinges may be disposed such that a number of turns of each of the torsion coil springs is changed according to a load applied to the spring hinge, wherein the rotation is to 180° and is mounted on the left side plate and The number of turns of each of the torsion coil springs of the spring hinge between the upper plate body and the lower plate body of the right side plate is greater than 90° and is mounted on the top plate and the Each of the spring hinges between the left side panel and the upper panel of the right side panel and between the bottom panel and the lower panel of the left side panel and the right side panel The number of turns of the wire of the torsion coil spring.

a wire of each of the torsion coil springs of the spring hinge may be disposed such that a cross section of the wire of the torsion coil spring is an ellipse having a vertical major axis, and a diameter of the ellipse is related to the torsion coil spring The length direction is reduced such that the spring hinge is compact along the length of the torsion coil spring.

The foldable container may further include: a plurality of side panel supporting units, each of the side panel supporting units including a connecting bracket and a fastening rod, the connecting bracket being disposed on the top panel and the left side panel and the right side panel The between the upper plate body, the left side plate and the upper plate body and the lower plate body and the bottom plate and the left side plate and the right side plate a front end and a rear end of the joint between the lower plates, the first end of the connecting bracket being fastened to one of the associated pair of elements, the fastening rod being mounted in the associated related The other of the pair of members is elastically and detachably inserted into the support hole formed at the second end of the connecting bracket, wherein the tightening rod is mounted in the shaft housing, the rod housing having the rod housing a guide groove extending in a length direction and a locking groove extending from a rear end of the guide groove in a circumferential direction, and a protruding handle is located at a predetermined portion of the fastening rod, the protruding handle elastically along the guiding groove or the Locking groove moves to cause the fastening rod to be inserted into the Connecting the support hole of the bracket, thereby supporting the connection bracket and preventing the left side panel and the right side panel from being folded, or removing the fastening rod from the support hole of the connection bracket to release the Connect the brackets.

The collapsible container may further include: a plurality of retaining bars disposed under the corresponding connecting brackets at a front end and a rear end of the bottom plate, each of the retaining bars having a hinge pin and fastening a pin, the hinge pin being disposed at an upper portion of the retaining rod such that the retaining rod rotates about the hinge pin and is elastically pulled or retracted from the bottom plate into the bottom plate, the fastening pin Projecting inwardly from a lower end of the retaining rod so that when the container body is folded, the fastening pin can be inserted into the support hole of the connecting bracket fixed to the top plate, thereby holding the container The folded state of the body.

In the clips disposed at the lower ends of the left side panel and the right side panel of the container body, at least each of the clip portions of the clips disposed at opposite ends of the left side panel and the right side panel includes a double locking hook, the double locking hook comprising a first locking hook and a second locking hook, the first locking hook and the second locking hook being rotatably coupled to each other by a connecting ring, when the container body is folded, the first a locking hook and the second locking hook are selectively lockable on the latch on the lower plate of the respective side panel or locked on the bolt on the top panel, wherein The first locking hook of the double locking hook is elastically biased upward by a torsion spring to prevent the double locking hook from sagging and coming into contact with the ground, and the supporting pin is retractably retracted from one side of the clamping portion to The elastic locking of the double locking hook is restricted upward, thereby preventing the double locking hook from contacting the lower portion of the corresponding latch of the side panel, thereby preventing an operation of folding the top panel onto the bottom panel.

In the clips disposed at the lower ends of the left side panel and the right side panel of the container body, at least each of the clip portions of the clips disposed at opposite ends of the left side panel and the right side panel includes a locking hook and a lower locking hook, the opposite ends of the upper locking hook and the lower locking hook are connected to each other by a coil spring, and the upper locking hook and the lower locking hook pass through the corresponding coil springs at opposite ends thereof, And being coupled to each other in a manner of locking to respective opposite ends of the coil spring, thus, when the first one of the left side panel and the right side panel is unfolded vertically in the second of the left side panel and the right side panel When unfolded, the spiral coil elastically supports the unfolded second side panel so as to prevent the second side panel from being biased toward the first portion at a joint between the second side panel and the bottom panel Side panels.

Further, a seating groove may be formed around each contact surface between the top plate, the left side plate, and the lower plate body of the left side plate and the lower half body, and the bottom plate And the seat groove is filled with a silicone filler to ensure a seal between the upper plate, the left side plate, and the upper plate body and the lower plate body of the right side plate, and the bottom plate.

Further, a guide surface having an inlet ramp on the outer side is formed on each opposite end of the inner surface of the front end plate and the rear end plate, so that the vehicle can be loaded when the vehicle is loaded into the container body Entering the container body along the guiding surface.

A preferred embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 38, a collapsible container according to the present invention includes a container body 100 in which a loading space 2 is defined. The container body 100 includes a top plate 10, a bottom plate 20, a left side plate 30 and a right side plate 30', and a front end plate 50 and a rear end plate 50'. The left side panel 30 and the right side panel 30' are vertically disposed on opposite sides of the top panel 10 and the bottom panel 20. Each of the left side plate 30 and the right side plate 30' includes an upper plate body 31 and a lower plate body 32. The upper plate body 31 and the lower plate body 32 of the left side plate 30 and the upper plate body 31 and the lower plate body 32 of the right side plate 30' are connected to each other by a spring hinge 40, and are connected to the top plate along the length direction of the container body by a spring hinge 40'. 10 and the bottom plate 20, the spring hinge 40 is disposed outside the upper plate body 31 and the lower plate body 32, and the upper end of the upper plate body 31 and the lower end of the lower plate body 32. Therefore, the upper plate body 31 and the lower plate body 32 can be folded inward in such a manner as to face each other. The front end panel 50 and the rear end panel 50' are coupled to the front and rear edges of the bottom panel 20 by bottom hinges 40', respectively, so as to be rotatable and foldable inwardly or outwardly. Further, the collapsible container according to the present invention further includes at least one clip 60 which is disposed between the top plate 10 and the upper plate 31 of the left side plate 30 and the right side plate 30', and the bottom plate 20 and the left side plate 30 and Each joint between the lower plates 32 of the right side panel 30' and between the top panel 10 and the front end panel 50, the top panel 10 and the rear end panel 50' releasably locks the associated pair of elements. The clip 60 includes a clip portion 61 and a latch 67 that is disposed at a corresponding position with respect to each other. The clip portion 61 includes a latch hook that is configured to be rotatable about an axis such that the latch hook releasably locks over the latch 67 to releasably lock the associated pair of components.

The clip portion 61 of the clip 60 includes a mounting plate 62, a clip body 63, a lock 64 and a lock hook 65. The clip body 63 is hinged on the mounting plate 62, and the lock 64 is elastically locked in the rectangular hole 63a of the clip body 63, the lock The hook 65 is pivotally coupled to one end of the body 63.

In particular, the present invention also includes a side panel folding mechanism 200. The side panel folding mechanism 200 includes a rotating shaft 210, and the side panel folding mechanism 200 is rotatably installed in the container body 100 along the length direction of the foldable container. The rotating shaft 210 is coupled to the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' by a belt so that when the rotating shaft 210 rotates to wind the belt around the rotating shaft 210, the left side plate is pulled inwardly and folded 30 and upper plate body 31 and lower plate body 32 of right side plate 30'.

In the present invention, the side panel folding mechanism 200 can be implemented in a variety of different manners. The embodiment of the side panel folding mechanism 200 can be classified into a structure in which the left side panel 30 and the right side panel 30' are simultaneously folded and a structure in which the left side panel 30 and the right side panel 30' are individually folded.

In one embodiment of the side panel folding mechanism 200, as shown in FIGS. 11 and 12, the rotating shaft 210 is rotatably mounted at a central portion of the top or bottom of the container body 100 along the length of the container. The first end of the belt 220 on the left side and the first end of the belt 220 on the right side are wound around the rotation shaft 210 in opposite directions. The second end of the left side belt 220 and the second end of the right side belt 220 are joined to the left side panel 30 and the right side panel 30' at the joint between the upper plate body 31 and the lower plate body 32, respectively. Therefore, when the rotating shaft 210 is rotated to simultaneously wind the left belt 220 and the right belt 220 around the rotating shaft 210, the left side plate 30 and the right side plate 30' are simultaneously pulled in and folded.

In another embodiment of the side panel folding mechanism 200, as shown in FIGS. 13 and 14, the rotating shafts 210 are rotatably mounted on both sides of the upper or lower portion of the container body 100 in the longitudinal direction of the container, respectively. The first end of the left belt 220 and the first end of the right belt 220 are coupled to the rotating shaft 210, respectively. The second end of the left side band 220 and the second end of the right side band 220 are at the junction and the left side between the upper plate body 31 and the lower plate body 32 of the corresponding left side plate 30 and right side plate 30'. The opposite one of the plate 30 and the right side plate 30' is joined such that the left side belt 220 and the right side belt 220 form an "X" shape. Therefore, when the rotating shaft 210 rotates to wind the left belt 220 and the right belt 220 around the corresponding rotating shaft 210, the left side plate 30 and the right side plate 30' are simultaneously pulled in and folded.

In still another embodiment of the side panel folding mechanism 200, as shown in FIGS. 15 and 16, the rotating shaft 210 is rotatably mounted on the upper or lower portions of the two side walls in the container body 100, respectively, along the longitudinal direction of the container. The first end of the left belt 220 and the first end of the right belt 220 are coupled to the rotating shaft 210, respectively. Each of the second end of the left side strap 220 and the second end of the right side strap 220 is at a joint and a relative between the upper panel 31 and the lower panel 32 of the corresponding left side panel 30 and right side panel 30'. One of the left side panel 30 and the right side panel 30' is joined such that the left side belt 220 and the right side belt 220 form an "X" shape. Therefore, when the rotating shaft 210 rotates to wind the left belt 220 and the right belt 220 around the corresponding rotating shaft 210, the left side plate 30 and the right side plate 30' are simultaneously pulled in and folded.

In another embodiment of the side panel folding mechanism 200, as shown in FIGS. 17 and 18, the rotating shaft 210 is rotatably mounted on the upper or lower portion of one side wall in the container body 100 along the length direction of the container. The first end of the strap 220 is coupled to the rotating shaft 210. The second end of the belt 220 is horizontally connected to the left side panel 30 or the right side panel 30', which is located on the opposite side of the rotating shaft 210. Therefore, when the rotating shaft 210 rotates to wind the belt 220 around the rotating shaft 210, the middle portions of the left side plate 30 and the right side plate 30' are pulled inwardly and folded.

As shown in FIGS. 9 and 10, in the side panel folding mechanism 200, a ratchet gear 211 is mounted on the rotary shaft 210. The ratchet pawl 212 is disposed at a predetermined position adjacent to the ratchet gear 211. The ratchet pawl 212 is rotatable about the hinge and resiliently contacts the ratchet gear 211 by the compression spring 212a such that the ratchet gear 211 is locked or unlocked with the ratchet pawl 212. Further, the stopper 213 is disposed at a predetermined position adjacent to the ratchet pawl 212, the stopper 213 and the retractable projection to selectively support the ratchet pawl 212, thereby selectively holding the ratchet gear 211 from the ratchet pawl 212 unlocked. Therefore, when the ratchet gear 211 and the ratchet pawl 212 are unlocked, the belt 220 can be released from the rotating shaft 210. The rotating shaft 210 is rotatably supported by a separate bearing. The bobbin 215 is mounted by a key and fastened to the rotating shaft 210 to wind the belt bobbin 215. Further, a polygonal protrusion 217 is provided at one end of the rotating shaft 210. The polygonal protrusion 217 is inserted into the through hole 105 formed in the container body 100 to extend the polygonal protrusion 217 to the outside of the container body 100. Therefore, the ratchet handle 230 having the wrench hole 235 is coupled to the rotating shaft 210 by inserting the polygonal protrusion 217 into the wrench hole 235. Therefore, the rotating shaft 210 can be rotated by rotating the ratchet handle 230 outside the container body 100.

As shown in FIG. 19, an inverted U-shaped hook 222 is coupled to the second end of the belt 220. The buckle 225 is disposed at a position on the left side plate 30 or the right side plate 30' adjacent to the joint between the upper plate body 31 and the lower plate body 32 of the left side plate 30 or the right side plate 30', so that the belt 220 is The inverted U-shaped hook 222 is detachably hooked on the buckle 225.

Meanwhile, as shown in FIGS. 26 to 28, each of the spring hinges 40, 40' includes an upper mounting piece 41 and a lower mounting piece 41, and the upper mounting piece 41 and the lower mounting piece 41 are rotatably rotated by a pivot pin 45 Connected to each other, the axle pin 45 is fitted with at least one torsion coil spring 46. The guiding recesses 43 are respectively formed on the outer surfaces of the mounting pieces 41 in such a manner as to face each other such that the opposing legs 47 of the torsion coil springs 46 are disposed in the guiding recesses 43 and guided by the guiding recesses 43 to prevent When the leg 47 is twisted by the torsion coil spring 46 to move in the axial direction, the leg 47 protrudes out of the mounting piece 41.

The spring hinges 40, 40' may be arranged such that the number of torsion coil springs 46 varies depending on the load applied to the spring hinges 40, 40'. Preferably, the number of torsion coil springs 46 of each of the spring hinges rotated to 180° and mounted between the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' is greater than each rotation to 90° and The number of torsion coil springs 46 of the spring hinge installed between the top plate 10 and the upper plate body 31 of the left side plate 30 and the right side plate 30' is larger than the lower plate body mounted on the bottom plate 20 and the left side plate 30 and the right side plate 30' The number of torsion coil springs 46 between the spring hinges 32.

Further, the spring hinges 40, 40' are disposed such that the number of turns of the wire 46a of each torsion coil spring 46 differs depending on the different loads applied to the spring hinges 40, 40'. Preferably, the number of turns of the wire 46a of each of the torsion coil springs 46 of the spring hinge rotated to 180° and mounted between the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' is greater than the rotation to 90° and spring hinges mounted between the top plate 10 and the upper plate body 31 of the left side plate 30 and the right side plate 30' and between the lower plate body 32 of the bottom plate 20 and the left side plate 30 and the right side plate 30' The number of turns of the wire 46a of the torsion coil spring 46.

As shown in FIGS. 29 and 30, in the spring hinges 40, 40', the wire 46a of the torsion coil spring 46 is disposed such that the cross section of the wire 46a of the torsion coil spring 46 is an elliptical shape having a vertical major axis. And the diameter of the ellipse decreases with respect to the length direction of the spring 46. Therefore, the spring hinges 40, 40' are compact along the length of the spring 46.

Also, since the spring hinges 40, 40' have a compact structure with respect to the length direction, the number of spring hinges arranged along the length direction of the container body can be increased as compared with the prior art. Therefore, the elastic force of the spring hinges 40, 40' can be increased to enable the container body 100 in the folded state to be easily unfolded.

Further, as shown in FIGS. 20 and 22, the present invention further includes a plurality of side panel supporting units 300 each having a connection bracket 310 and a fastening rod 320. The connection bracket 310 is disposed between the upper plate 10 and the upper plate body 31 of the left side plate 30 and the right side plate 30', between the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30', and the left side plate 30 And the front end and the rear end of the joint between the lower plate body 32 of the right side plate 30' and the bottom plate 20. A first end of the attachment bracket 310 is fastened to one of the associated pair of elements, and the fastening rod 320 is mounted on the other of the associated pair of elements and is resiliently and removably inserted into the support aperture 312, A support hole 312 is formed at the second end of the connection bracket 310. The tightening rod 320 is mounted in the rod housing 330. The guide groove 332 is formed in the rod case 330 along the length direction of the rod case 330, and the lock groove 333 extends from the rear end of the guide groove 332 in the circumferential direction of the rod case 330. The protruding handle 322 provided at a predetermined portion of the fastening rod 320 elastically moves along the guide groove 332 or the locking groove 333 to insert the fastening rod 320 into the support hole 312 of the connection bracket 310, thereby supporting the connection bracket 310 and preventing the left side The plate 30 and the right side plate 30' are folded or the fastening rod 320 is removed from the support hole 312 of the connection bracket 310 to release the connection bracket 310.

Here, the connection brackets 310 belonging to the top plate 10 and the bottom plate 20 are provided to be fastened to the top plate 10 and the bottom plate 20.

Further, as shown in FIGS. 23 to 25, the present invention further includes a plurality of holding bars 400 which are located below the respective connecting brackets 310 and which are provided at the front end and the rear end of the bottom plate 20. A hinge pin 410 is provided at an upper portion of each of the holding bars 400. The retaining rod 400 rotates about the hinge pin 410 and is resiliently pulled out or retracted from the bottom plate 20. The fastening pin 415 protrudes inward from the lower end of the holding rod 400 so that when the container body 100 is folded, the fastening pin 415 can be inserted into the support hole 312 of the connection bracket 310 fixed on the top plate 10, thereby keeping the container body 100 folded. status.

Due to this configuration, when the top plate 10, the left side plate 30, the right side plate 30', and the bottom plate 20 are in the folded state, the elastic force of the spring hinge 40 can be restricted, so that the locking and unlocking operations of the clip 60 can be performed.

Meanwhile, as shown in Fig. 32 of the clip 60 provided at the lower end of the left side panel 30 and the right side panel 30' of the container body 100, in the present invention, each buckle is provided at the opposite ends of the left side panel 30 and the right side panel 30'. The clips 60 each include a double locking hook 65' that includes two locking hooks 65a and 65b that are rotatably coupled to each other by a connecting ring 66. When the container body 100 is folded, the two lock hooks 65a and 65b are selectively locked on the latch 67 provided on the lower plate body of the left side plate 30 and the right side plate 30' or locked on the latch 67 provided on the top plate 10.

The lock hook 65a of the double lock hook 65' is elastically biased upward by the torsion spring 69 to prevent the double lock hook 65' from sagging and coming into contact with the ground. Further, the support pin 80 is retractably retracted from one side of the clip portion 61 to restrict the elastic upward rotation of the double lock hook 65', thereby preventing the double lock hook 65' from coming into contact with the lower portion of the corresponding latch of the side plate, thereby It is prevented that the side panels are not properly folded on the bottom plate 20.

In the present embodiment, the support pin 80 is provided to be manually pushed by a worker to retract into the nip 61, and the support pin 80 is elastically pulled out from the nip 61 by a manual manipulation button.

Alternatively, in the present invention, as shown in Fig. 33 of the clip 60 provided at the lower end of the left side panel 30 and the right side panel 30' of the container body 100, each buckle located at the opposite end of the left side panel 30 and the right side panel 30' The clip 60 may include a clip portion 61 including a top lock hook 65-1 and a lower lock hook 65-2, the upper lock hook 65-1 and the lower lock hook 65-2 passing through the coil spring 70 at their opposite ends Connect to each other. The locking hook 65-1 and the lower locking hook 65-2 are connected to each other with their opposite ends passing through the respective coil springs 70 and locked to the respective opposite ends of the coil springs 70. Therefore, when the second one of the left side panel 30 and the right side panel 30' is vertically unfolded and the first one of the left side panel 30 and the right side panel 30' is folded, the coil spring 70 elastically supports the unfolded second side panel so that It is possible to prevent the second side panel from being biased toward the first side panel at the junction between the second side panel and the bottom panel.

Meanwhile, as shown in FIGS. 35 and 36, a seating groove is formed around each contact surface between the upper plate body 31, the lower plate body 31 and the lower plate body 32 of the top plate 10, the left side plate 30, and the right side plate 30', and the bottom plate 20. 425. Silicone filler 420 is filled in the housing 425 to ensure a seal between the associated pair of elements.

Further, a door 150 is provided at a central portion of each of the left side plate 30 and the right side plate 30' of the container body 100, and the door 150 is rotated about a hinge provided on one side of the door 150 to be opened or closed. A guide surface 55 having an inlet ramp 56 on the outside is formed on each of the opposite ends of the inner surfaces of the front end plate 50 and the rear end plate 50' such that the vehicle enters the container through the guiding surface 55, for example, when loading the vehicle into the container. in vivo.

In the figure, reference numeral 219 denotes a support bearing of the rotating shaft 210, and reference numeral 335 and reference numeral 415 denote springs that elastically support the fastening rod 320 and the hinge pin of the holding lever 400, respectively.

The operation and effect of the present invention having the above structure will be described below.

First, when the collapsible container of the present invention is empty and unloaded, the container body 100 remains folded to be stored, loaded, unloaded, or transported. In detail, the clip 60 that fixes the front end plate 50 and the rear end plate 50' of the container body 100 to the top plate 10 is loosened. The front end plate 50 and the rear end plate 50' are then rotated inwardly around the hinge 40'', and the front end plate 50 and the rear end plate 50' are folded over the upper surface of the bottom plate 20 in the container body 100.

Then, the clip 60 that fastens the left side panel 30 and the right side panel 30' to the top panel 10 and the bottom panel 20 is released.

Subsequently, the top plate 10, the left side plate 30, the right side plate 30', and the bottom plate 20 vertically supported by the connection bracket 310 are released from the connection bracket 310, and the connection bracket 310 is disposed on the top plate 10 and the left side plate 30 and the right side plate 30' The connection between the lower body 32 and the lower plate 32 of the left side plate 30 and the right side plate 30' between the plate bodies 31 and between the lower plate body 32 of the left side plate 30 and the right side plate 30' and the bottom plate 20 On the front end and back end.

In other words, the worker holds the protruding handle 322 of the tightening rod 320 elastically inserted into the support hole 312 of the connecting bracket 310, elastically moves the protruding handle 322 rearward along the guiding groove 332 of the rod housing 330, and then the worker rotates The protruding handle 322 is positioned such that the protruding handle 332 is locked to the locking groove 333 extending from the guiding groove 332 and supported by the cover locking groove 333.

At this time, the tightening rod 320 is moved out of the support hole 312 of the connection bracket 310 to release the associated element vertically supported by the connection bracket 310 from the connection bracket 311.

Then, the top plate 10, the left side plate 30, the right side plate 30' and the bottom plate 20 of the container body 100 are rotated inwardly around the respective hinges 40 and hinges 40' to fold the top plate 10, the left side plate 30, the right side plate 30' and the bottom plate 20 .

In particular, in the present invention, since the side panel folding mechanism 200 is used, the top board 10, the left side panel 30, the right side panel 30', and the bottom panel 20 of the container body 100 can be easily and safely folded by a small number of workers.

In detail, in order to rotate the rotating shaft 210 of the container body 100 in the direction of the loosening belt 220, the stopper 213 is retracted such that the ratchet pawl 212 of the locking ratchet gear 211 releases the ratchet gear 211 to allow the ratchet gear 211 to be along the loosening belt 220 The direction of rotation.

Then, when the belt 220 is released from the bobbin 215 of the rotating shaft 210, the inverted U-shaped hook 222 provided at the end of the belt 220 is hooked on the buckle 225 which is disposed on the left side panel 30 and the right side panel 30' Between the upper plate body 31 and the lower plate body 32.

Subsequently, the stopper 213 is retracted to support the ratchet pawl 212 to lock the ratchet gear 211 of the rotating shaft 210 to the ratchet pawl 212 again, thereby restricting the ratchet gear 211 from rotating in the direction of the loosening belt 220.

From this state, the rotating rotary shaft 210 winds the belt 220 around the bobbin 215. To wind the belt 220 around the bobbin 215, the wrench hole 235 of the ratchet handle 230 is fitted to the polygonal protrusion 217 of the rotating shaft 210 inserted into the through hole 105 formed on the inner surface of the container body 100, and then the ratchet handle 230 is rotated. Thereby, the rotating shaft 210 is rotated, and thus the bobbin 215 is wound around the belt 220.

Due to the operation of rotating the rotating shaft 210 in the winding 220, the belt 220 pulls the left side panel 30 and the right side panel 30' inwardly. Therefore, when the upper plate body 31 and the lower plate body 32 are wound around the top plate 10 and the left side plate 30 and the right side plate 30' disposed between the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' When the spring hinge 40 and the spring hinge 40' between the plate bodies 31 and between the lower plate body 32 of the left side plate 30 and the right side plate 30' and the bottom plate 20 are elastically rotated inward, the left side plate 30 and the right side The plate 30' is folded.

Here, as described above, the position of the arrangement of the rotating shaft 210 in the container body 100 may be changed to be set at various other positions.

For example, as shown in FIGS. 11 and 12, the rotating shaft 210 may be rotatably disposed at a center portion of the top or bottom of the container body 100 along the longitudinal direction of the container. In this case, the left belt 220 and the right belt 220 are wound around the bobbin 215 of the rotating shaft 210 in the opposite direction. The ends of the left side belt 220 and the right side belt 220 are joined to the middle portions of the left side panel 30 and the right side panel 30', respectively. When the rotary shaft 210 rotates, the left belt 220 and the right belt 220 are simultaneously wound around the spool 215 to simultaneously pull the left side panel 30 and the right side panel 30' inward and fold the left side panel 30 and the right side panel 30'.

Alternatively, as shown in FIGS. 13 and 14, the two rotating shafts 210 may be disposed on both sides of the upper and lower portions of the container body 100 in the longitudinal direction of the container. In this case, the left belt 220 and the right belt 220 are coupled to the spool 215 of the corresponding rotating shaft 210. The ends of the left side belt 220 and the right side belt 220 are joined to the central portions of the respective left side panel 30 and right side panel 30' such that the left side belt 220 and the right side belt 220 form an "X" shape. When the rotating shaft 210 rotates to wind the left belt 220 and the right belt 220 around the corresponding bobbin 215, the moving left side panel 30 and the right side panel 30' are pulled inward and folded.

Alternatively, as shown in FIGS. 15 and 16, the rotating shaft 210 may be disposed at an upper portion and a lower portion of both side walls of the container body 100. In this case, the left belt 220 and the right belt 220 are coupled to the spool 215 of the corresponding rotating shaft 210. The ends of the left side belt 220 and the right side belt 220 are joined to the central portions of the respective left side panel 30 and right side panel 30' such that the left side belt 220 and the right side belt 220 form an "X" shape. When the rotating shaft 210 rotates to wind the left belt 220 and the right belt 220 around the corresponding bobbin 215, the left side panel 30 and the right side panel 30' are pulled inward and folded.

Alternatively, as shown in Figures 17 and 18, a rotating shaft 210 and a spool 215 can be used. In this case, the rotating shaft 210 is disposed at an upper portion or a lower portion of one of the side walls of the container body 100. The end of the belt 220 connected to the bobbin 215 of the rotating shaft 210 is horizontally connected to the left side plate 30 or the right side plate 30' disposed opposite to the rotating shaft 210. When the rotating shaft 210 rotates to wind the belt 220 around the bobbin 215, the left side plate 30 and the right side plate 30' are pulled inward and folded.

Also, in the present invention, since the left side panel and the right side panel are folded by rotating the rotating shaft 210, the operation of folding the container body 100 can be easily realized by a small number of workers. Further, when the container body 100 is folded, the worker can be outside the container body 100, thereby ensuring safety during the folding operation.

After the container body 100 is folded, the container body 100 can be held in a folded state by the clip 60, and the clips 60 are disposed at opposite ends of the bottom plate 20. To this end, each of the clips 60 includes a double latching hook 65' that includes two latching hooks 65a and 65b that are rotatably coupled to each other by a connecting ring 66. The double locking hook 65' of the clip 60 is hooked on a corresponding latch 67 provided on the top plate 10. Therefore, the top plate 10, the left side plate 30, the right side plate 30', the bottom plate 20, the front end plate 50, and the rear end plate 50' are held in a folded state.

When the container body 100 is stored, loaded, unloaded, and transported, the container body 100 is maintained in a folded state.

In order to store various goods in the container body 100 in a folded state, the container body 100 must be unfolded.

In order to unfold the container body 100, first, the double lock hook 65' of the clip 60 that holds the container body 100 in the folded state is opened.

Here, when the holding lever 400 holds the container body 100 in the folded state, an operation of unlocking the double lock hook 65' of the clip 60 is carried out. To this end, the holding rods 400 disposed on the opposite sides of the front end and the rear end of the bottom plate 20 are elastically withdrawn from the bottom plate 20 and the holding rod 400 is rotated upward about the corresponding hinge pin 410. Subsequently, the fastening pins 415 of the holding lever 400 are inserted into the respective support holes 312 of the connection brackets 310 provided on the top plate 10, thereby maintaining the folded state of the container body 100. In this state, the double locking hook 65' of the clip 60 is unlocked.

In this state, the container body 100 is supported by the holding rod 400 to limit the elastic force of the spring hinge 40. Therefore, the unlocking operation of the double lock hook 65' of the clip 60 can be achieved.

After the double lock hook 65' is unlocked, the left side plate 30 or the right side plate 30' is unfolded in the vertical direction by removing the corresponding holding rod 400 from the top plate 10. The left side panel 30 or the right side panel 30' is vertically deployed by the elastic force of the torsion coil springs 46 of the respective spring hinges 40 and 40', and the spring hinges 40 and 40' are disposed on the upper panel 10 and the upper panel of the left side panel 30 and the right side panel 30'. Between the bodies 31, between the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30', and between the lower plate body 32 of the left side plate 30 and the right side plate 30' and the bottom plate 20.

When in this state, the upper plate body 31 and the lower plate body 32 of the vertically unfolded left side plate 30 and right side plate 30' are supported by the respective connecting brackets 310 to be maintained in a vertically unfolded state.

In detail, the protruding shank 322 of each of the fastening rods 320 locked into the corresponding locking grooves 333 of the rod housing 330 is removed from the locking groove 333, so that the fastening rod 320 elastically advances and is inserted into the corresponding connection bracket 310 In the support hole 312. Then, the vertically expanded left side plate 30 and or the upper plate body 31 and the lower plate body 32 of the right side plate 30' can be held in a vertical state by the joint bracket 310. Further, in the case where the clip 60 is disposed at the lower ends of the left side plate 30 and the right side plate 30', each of the clips 60 disposed at the opposite ends of the left side plate 30 and the right side 30' is disposed to divide the lock hook 65 into an upper portion and a lower portion, The upper and lower portions are elastically coupled to each other by a coil spring 70', and the lock hooks 65 of the clips 60 are elastically hooked to the respective latches 67 to elastically lock to the lower plate bodies 32 of the side plates 30 and 30'.

Similarly, the upper plate body 31 and the lower plate body 32 of the vertically unfolded left side plate 30 or the right side plate 30' are vertically supported by the connection bracket 310, and the lower plate body 32 passes through a buckle having the lock hook 65 with the coil spring 70. The clip 60 is fastened to the bottom plate 20. Therefore, when the other of the left side plate 30 or the right side plate 30' is deployed in the vertical direction, it is possible to prevent the upper plate body 31 and the lower plate body 32 of the left side plate 30 or the right side plate 30' which are first unfolded from being bent and being unfolded. The side panels 30 and 30' are inclined. Further, since the lock hook 65 of the clip 60 is locked to the lower plate body of the left side plate 30 or the right side plate 30' which is deployed first, and the coil spring 70 of the clip 60 is elastically extended, the first side plate 30 or 30' which is unfolded is prevented. Skewed towards the worker.

In this case, the left side plate 30 or the right side plate 30' which is disposed first with respect to the unfolded left side plate 30 or right side plate 30' can be safely deployed in the vertical direction. Of course, likewise, this left side panel 30 or right side panel 30' is deployed in a vertical direction by the elastic force of the torsion coil springs 46 of the spring hinges 40 and 40' which are disposed on the bottom panel 10 and the side panels 30 and 30. Between the upper plate bodies 31, between the upper plate bodies 31 and the lower plate bodies 32 of the side plates 30 and 30', and between the lower plate bodies 32 of the side plates 30 and 30' and the bottom plate 20.

In particular, in the present invention, each spring hinge 40, 40' is provided to form a guide recess 43 on the outer surface of the mounting piece 41 to prevent the opposite leg 47 of the torsion coil spring 46 from protruding to the outside of the mounting piece 41 . Further, when the torsion coil spring 46 is twisted, the leg 47 moves along the guide recess portion 43. Therefore, the top board 10, the left side board 30, the right side board 30', and the bottom board 20 can be smoothly folded or unfolded.

Preferably, the number of torsion coil springs 46 of each spring hinge 40 disposed at the junction between the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' and rotated within an angle of 180[deg.] is greater than a joint between the top plate 10 and the upper plate body 31 of the left side plate 30 and the right side plate 30' and between the bottom plate 20 and the lower plate body 32 of the left side plate 30 and the right side plate 30' and within an angle of 90° The number of torsion coil springs 46 of each spring hinge 40' that rotates. Further, the number of turns of the torsion coil spring 46 of the spring hinge 40 rotating in the range of 180 degrees may be larger than the number of turns of the torsion coil spring 46 of the spring hinge 40' rotating in the range of 90 degrees. Therefore, the operational efficiency and durability of the container can be improved.

Further, the wire 46a of each torsion coil spring 46 is disposed such that the wire 46a has an elliptical shape having a vertical major axis and the diameter of the ellipse decreases with respect to the length direction of the spring 46, and thus the torsion coil spring 46 is along The torsion coil spring 46 has a compact longitudinal direction. Therefore, the number of mountable spring hinges 40, 40' is increased, thereby increasing the spring force of the spring hinges 40, 40'. Therefore, the operation of unfolding the left side panel 30 and the right side panel 30' can be realized more smoothly.

After the container body 100 is unfolded, the upper plate body 31 of the left side plate 30 and the right side plate 30' is fixed to the top plate 10 by the corresponding clip 60, and the lower plate body 32 of the left side plate 30 and the right side plate 30' are passed correspondingly. The clip 60 is fixed to the bottom plate 20.

Further, the top plate 10, the bottom plate 20, and the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' are fastened to each other by the joint bracket 310. To this end, the protruding handle 322 of each of the fastening rods 320 locked to the lock groove 333 of the corresponding rod housing 330 is removed from the lock groove 333 so that the fastening rod 320 elastically advances and is inserted into the corresponding connection bracket 310. In the support hole 312. Then, the vertically unfolded top plate 10, the bottom plate 20, and the upper plate body 31 and the lower plate body 32 of the left side plate 30 and the right side plate 30' can be held in a vertically supported state by the joint bracket 310.

Similarly, after the container body 100 is fully deployed, various goods are stored in the container body 100.

For example, when loading a vehicle into the container body 100, the vehicle can move more smoothly along the entry ramp 56 on the guide surface 55 formed at the opposite end of the front end panel 50 and the rear end panel 50'.

Further, a door 150 provided on each of the left side panel 30 and the right side panel 30' and rotatable by a hinge can be used to open the container body 100. Workers can easily enter and exit the container body 100 through the door 150.

In the collapsible container of the present invention having the above structure and operation, the angle casting 500 disposed at each corner of the top plate is held and moved by the container handling mechanism when the container is loaded or unloaded. At this time, the container body 100 can be reliably held in a vertically supported state by the spring hinges 40 and 40', the clip 60, and the joint bracket 310.

Further, the resin filler 420 is installed in an easing groove 425 formed between the upper plate body 31 and the lower plate body 32 of the top plate 10, the left side plate 30, and the right side plate 30', and the bottom plate 20. Each contact surface is surrounded by a surface to ensure a seal between the associated components. Therefore, it is possible to reliably prevent water from entering the container so that the goods can be safely stored, loaded, unloaded, and transported.

As described above, the foldable container according to the present invention can store various goods and transport them by ship or the like, in which a small number of workers can easily fold or unfold the container body using the folding mechanism to conveniently transport the container, and the space to be used is optimal. Chemical. Furthermore, since the container body can be reliably held in a folded or unfolded state, the foldable container has better durability and can be used safely.

In particular, the folding mechanism is disposed such that the belt around the rotating shaft is coupled to the left side panel and the right side panel at a portion adjacent to the joint between the upper and lower panels adjacent to the left and right side panels. Therefore, the worker pulls in and folds the left side panel and the right side panel, the worker is located outside the container body, and the ratchet handle is used to wind the belt around the rotating shaft to realize a simple operation of rotating the rotating shaft. Therefore, only a small number of workers are required to realize the operation of folding the container body, and the safety of the operation can be ensured.

Furthermore, the top, left side, right side and bottom panels of the container body are connected to each other not only by spring hinges but also by connecting brackets after being deployed vertically. Therefore, even when the corner castings of the respective corners provided at the top are gripped, lifted, and moved by the container transporter to move the container body, the durability of the container body in the vertical or horizontal direction can be remarkably improved.

The cross-sectional structure of the spring wire is improved and the number of torsion coil springs of the spring hinge or the number of turns of the wire of each torsion coil spring varies depending on the applied load, for example, rotated to 180° and mounted on the left side The number of torsion coil springs of the spring hinge between the upper and lower plates of the plate and the right side plate or the number of turns of the wire of each torsion coil spring is greater than 90° and is mounted on the top and left side plates and the right side plate The number of torsion coil springs between the upper plate bodies and the spring hinges between the lower plate body and the bottom plate of the left side plate and the right side plate or the number of turns of the wire of each torsion coil spring. Therefore, the number of torsion coil springs is increased as compared with the prior art, thereby improving the durability of the container body, and the container body can be more easily deployed by the increased elastic force of the spring hinge. Furthermore, each spring hinge has a guiding recess so that when each torsion coil spring is twisted, the recess guides the axial movement of the opposing legs of the torsion coil spring and prevents the opposing legs from protruding out of the spring hinge, thereby increasing the container Operational efficiency and durability.

In addition, the double locking hooks of the clips provided at the bottom are placed on the corresponding bolts on the top plate to hold the container body in the folded state, before the double locking hooks of the clips are unlocked from the bolts, the top plate The bottom plate and the bottom plate are connected to each other by a separate holding rod. Therefore, regardless of the spring force of the spring hinge, the operation of unlocking the double hook of the clip from the bolt can be achieved. Each of the double locking hooks of the clip is supported by a separate support pin to restrict the double hook from rotating upward or downward, and thus, unlike the prior art, the double hook is prevented from being between the respective side plates or the lower end of the side plate and the bottom plate The jam is so that the operation of folding the left side panel and the right side panel is smooth.

When the first one of the folded left and right side panels of the container body is unfolded after the second of the folded left and right side panels are unfolded, the second side panel passes the clips belonging to the second side panel and The connecting bracket is kept in a vertically deployed state. Therefore, the second side panel in the vertically unfolded state is prevented from being folded and inclined toward the first side panel, and the first side panel is prevented from being deflected toward the worker, thereby realizing the unfolding operation and improving safety.

Further, the silicone filler fills the joint between the top plate, the bottom plate and the upper plate and the lower plate of the left and right side plates, thereby improving the sealing ability and preventing water from entering. Further, the guide surface is formed on the front end plate and the rear end plate of the container body to guide the entry of the vehicle when the vehicle is loaded into the container body, thereby realizing the operation of loading the vehicle. In addition, each of the left and right side panels is provided with a separate door to allow workers to easily access the container body.

While the invention has been described with respect to the preferred embodiments of the present invention, it will be understood that the various modifications, additions and substitutions of the invention may be made without departing from the scope and spirit of the invention.

2. . . Loading space

10. . . roof

20. . . Bottom plate

30. . . Left side board

30’. . . Right side panel

31. . . Upper plate

32. . . Lower plate

40. . . Spring hinge

40’. . . Spring hinge

41. . . Mounting piece

43. . . Depression

45. . . Shaft pin

46. . . Torsion coil spring

46a. . . metallic line

47. . . leg

50. . . Front panel

50’. . . Backend board

55. . . Guide surface

56. . . Entrance ramp

60. . . Clip

61. . . Clip

62. . . Mounting plate

63. . . Body

63a. . . Rectangular hole

64. . . lock

65. . . Lock hook

65’. . . Double hook

65a. . . Lock hook

65b. . . Lock hook

65-1. . . Locking hook

65-2. . . Locking hook

67. . . latch

69. . . Torsion spring

70. . . Coil spring

80. . . Support pin

100. . . Container body

105. . . Through hole

150. . . door

200. . . Side panel folding mechanism

210. . . Rotary axis

211. . . Ratchet gear

212. . . Ratchet claw

212a. . . compressed spring

213. . . Stop

215. . . Spool

217. . . Polygonal protrusion

219. . . Support bearing

220. . . band

222. . . hook

225. . . Buckle

230. . . Ratchet handle

235. . . Wrench hole

300. . . Side panel support unit

310. . . Connecting bracket

312. . . Support hole

320. . . Fastening rod

322. . . Extended handle

330. . . Rod shell

332. . . Boot slot

333. . . Locking slot

335. . . spring

400. . . Hold rod

410. . . Hinge pin

415. . . Fastening pin

420. . . Silicone filler

425. . . Seat slot

500. . . Angle casting

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Figure 1 is a perspective view showing the exterior appearance of a collapsible container in accordance with the present invention;

Figure 2 is a left side view of the collapsible container in accordance with the present invention;

Figure 3 is a right side view of the collapsible container in accordance with the present invention;

Figure 4 is a front elevational view of a collapsible container in accordance with the present invention;

Figure 5 is a rear elevational view of the collapsible container in accordance with the present invention;

Figure 6 is a front cross-sectional view of a collapsible container in accordance with the present invention;

Figure 7 is an enlarged view of a circled portion "A" in Figure 6;

Figure 8 is a cross-sectional view showing a portion of a collapsible container in accordance with the present invention;

Figure 9 is a side view showing the structure of a folding mechanism of a side panel according to the present invention;

Figure 10 is a front elevational view showing the ratchet gear of Figure 9;

11 to 18 are front elevational views showing various embodiments of mounting a rotating shaft according to the present invention;

Figure 19 is a perspective view showing a connecting portion of a belt according to the present invention;

Figure 20 is a front elevational view showing the structure of a side support unit according to the present invention;

Figure 21 is a cross-sectional view showing the structure of an important portion in Figure 20;

Figure 22 is a front elevational view showing the structure of the important portion in Figure 20;

Figure 23 is a front elevational view showing the mounting of a retaining plate according to the present invention;

Figure 24 is a side cross-sectional view of Figure 23;

Figure 25 is a view showing the operation of Figure 23;

Figure 26 is a perspective view showing an embodiment of a hinge according to the present invention;

Figure 27 is a cross-sectional view of Figure 26;

Figure 28 is a perspective view showing another embodiment of a hinge according to the present invention;

Figure 29 is a perspective view showing still another embodiment of a hinge according to the present invention;

Figure 30 is a cross-sectional view of the spring of Figure 29;

31 to 33 are front views showing several embodiments of a clip according to the present invention;

Figure 34 is a front elevational view showing a double hook using a clip according to the present invention;

Figure 35 is a cross-sectional view showing a connection structure of a sealing packing according to the present invention;

Figure 36 is an enlarged view of a circled portion "B" in Figure 35;

37 and 38 are views continuously showing an example of a folding process of a container body according to the present invention.

10. . . roof

20. . . Bottom plate

30. . . Left side board

30’. . . Right side panel

31. . . Upper plate

32. . . Lower plate

40. . . Spring hinge

40’. . . Spring hinge

50. . . Front panel

60. . . Clip

65. . . Lock hook

65’. . . Double hook

100. . . Container body

150. . . door

500. . . Angle casting

Claims (20)

A collapsible container comprising: a container body defining a loading space therein, the container body comprising: a top plate; a bottom plate; a left side plate and a right side plate, the left side plate and the right side plate being vertically disposed on the top plate And an opposite side between the bottom plate, each of the left side plate and the right side plate includes an upper plate body and a lower plate body, the upper plate body and the lower plate body being hinged along the container body by a spring hinge Longitudinally connected to each other and to the top plate and the bottom plate, the spring hinge being disposed at an outer portion between the upper plate body and the lower plate body and an upper end of the upper plate body and the lower plate An inner portion of the lower end of the body such that the upper plate body and the lower plate body are foldable inwardly toward each other; and a front end plate and a rear end plate respectively connected to the rear end plate by a bottom hinge a front edge and a rear edge of the bottom plate so as to be rotatable and foldable inward or outward; at least one clip disposed on the top plate and the upper plate of the left side plate and the right side plate Between Relatably relating each of the connection between the bottom plate and the lower plate of the left side plate and the right side plate and between the top plate and the front end plate and the rear end plate The pair of elements are locked to each other, the clip includes: a clip portion and a latch, the clip portion and the latch are disposed facing each other at a corresponding position, the clip portion having a lock hook, the lock hook Provided to be rotatable about an axis such that the hook is releasably locked to the latch; and a side panel folding mechanism comprising a rotating shaft rotatably mounted along the length of the container body In the container body, the rotating shaft is connected to the connection between the left side plate and the upper plate body or the lower plate body of the right side plate by a belt so as to rotate the rotating shaft to rotate around the rotating plate When the shaft is wound around the belt, the upper plate and the lower plate of the left side plate and the right side plate are pulled inwardly and folded. The collapsible container of claim 1, wherein the rotating shaft of the side panel folding mechanism includes a rotation of a central portion rotatably mounted at a top of the container body along a length direction of the container body a shaft, wherein the left end of the belt and the right end of the belt are wound in opposite directions about the rotating shaft, and the left side belt and the right side belt second end are respectively in the upper plate body and the The connection between the lower plates is connected to the left side plate and the right side plate, and therefore, when the rotating shaft rotates to simultaneously wrap the left side belt and the right side belt around the rotating shaft, At the same time, the left side plate and the middle portion of the right side plate are pulled inwardly. The collapsible container of claim 1, wherein the rotating shaft of the side panel folding mechanism includes a rotation of a center portion of the bottom of the container body rotatably mounted along a length direction of the container body a shaft, wherein the left end of the belt and the right end of the belt are wound in opposite directions about the rotating shaft, and the left side belt and the right side belt second end are respectively in the upper plate body and the The connection between the lower plates is connected to the left side plate and the right side plate, and therefore, when the rotating shaft rotates to simultaneously wrap the left side belt and the right side belt around the rotating shaft, At the same time, the left side plate and the middle portion of the right side plate are pulled inwardly. The collapsible container of claim 1, wherein the rotating shaft of the side panel folding mechanism includes an upper portion rotatably mounted on both sides of the container body along a length direction of the container body or a lower rotating shaft, wherein a first end of the left belt and the right belt are respectively coupled to the rotating shaft, and a second end of each of the left belt and the right belt is at a corresponding side plate a joint between the upper plate body and the lower plate body is connected to one of the opposite left side plate and the right side plate such that the left side band and the right side band form an "X" The shape, therefore, when the rotating shaft is rotated to wind the left side belt and the right side belt around the corresponding rotating shaft, simultaneously pull inward and fold the middle portions of the left side panel and the right side panel. The collapsible container of claim 1, wherein the rotating shaft of the side panel folding mechanism comprises rotatably mounted on an upper portion of two side walls of the container body along a length direction of the container body Or a lower rotating shaft, wherein the left end of the belt and the first end of the belt are connected to respective rotating shafts, and the second end of each of the left belt and the right belt is at a corresponding side panel a joint between the upper plate body and the lower plate body is connected to one of the opposite left side plate and the right side plate to form the left side belt and the right side belt to form an "X" The shape, therefore, when the rotating shaft is rotated to wind the left side belt and the right side belt around the corresponding rotating shaft, simultaneously pull inward and fold the middle portions of the left side panel and the right side panel. The collapsible container of claim 1, wherein the rotating shaft of the side panel folding mechanism comprises an upper or lower portion rotatably mounted on a side wall of the container body along a length of the container body a rotating shaft, wherein the first end of the belt is coupled to the rotating shaft, and the second end of the belt is horizontally connected to the left side plate or the right side plate opposite to the rotating shaft, thus When the rotating shaft rotates to wind the belt around the rotating shaft, the inner side of the left side panel and the right side panel are pulled inwardly and folded. The collapsible container according to any one of the preceding claims, wherein the side panel folding mechanism comprises: a ratchet gear mounted on the rotating shaft; a ratchet pawl, the ratchet pawl Provided at a predetermined position adjacent to the ratchet gear to enable the ratchet pawl to rotate about a hinge, the ratchet pawl resiliently contacting the ratchet gear by a compression spring such that the ratchet gear is releasably locked a ratchet pawl; and a stopper disposed at a predetermined position adjacent to the ratchet pawl, the stopper being retractably retractable to selectively support the ratchet pawl such that The ratchet gear is selectively retained in a state of being unlocked from the ratchet pawl to allow the belt to be selectively released from the rotating shaft. The collapsible container according to any one of the items 2 to 6, wherein the bobbin is mounted by a key and fastened on the rotating shaft such that the belt is wound around the bobbin. The collapsible container according to any one of the preceding claims, wherein the polygonal protrusion is disposed at one end of the rotating shaft and inserted into the through hole, the through hole being formed in the container body, So that the polygonal protrusion extends out of the container body through the through hole, wherein the ratchet handle has a wrench hole, and the ratchet handle is connected to the rotating shaft by inserting the polygonal protrusion into the wrench hole, In order to be able to rotate the rotating shaft by rotating the ratchet handle outside the container body. The collapsible container according to any one of the preceding claims, wherein the inverted U-shaped hook is connected to the second end of the belt, and the buckle is disposed on the corresponding side plate A joint between the upper plate body and the lower plate body of the side plate is adjacent to a position such that the inverted U-shaped hook of the belt is detachably hooked on the buckle. The collapsible container of claim 1, wherein each of the spring hinges comprises an upper mounting piece and a lower mounting piece, the upper mounting piece and the lower mounting piece being rotatably connected to each other by a pivot pin, the shaft pin Mounted thereon with at least one torsion coil spring, wherein the guiding recesses are respectively formed on the outer surface of the mounting piece in such a manner as to face each other such that opposite legs of the torsion coil spring are located in the guiding recess, and The guide recess is guided to prevent the leg from protruding out of the mounting piece when the leg is twisted by the torsion coil spring to move in the axial direction. The collapsible container of claim 11, wherein each of the spring hinges is disposed such that the number of the torsion coil springs differs depending on a load applied to the spring hinge, wherein each Rotating to 180° and the number of torsion springs of the spring hinge mounted between the upper plate body and the lower plate body of the left side plate and the right side plate is greater than each rotation to 90° and mounted on The spring between the top plate and the upper plate of the left side plate and the right side plate and between the bottom plate and the lower plate body of the left side plate and the right side plate The number of torsion springs for the hinge. The collapsible container of claim 11, wherein each of the spring hinges is disposed such that a number of turns of each of the torsion coil springs varies according to a load applied to the spring hinge, Wherein, a wire of each of the torsion coil springs of the spring hinge that is rotated to 180° and mounted between the upper plate body and the lower plate body of the left side plate and the right side plate The number is greater than the rotation to 90° and is installed between the top plate and the upper plate of the left side plate and the right side plate, and the mounting on the bottom plate and the left side plate and the right side plate The number of turns of the wire of each of the torsion coil springs of the spring hinge between the lower plates. The collapsible container according to any one of the preceding claims, wherein the wire of each of the torsion coil springs of the spring hinge is disposed as a cross section of the wire of the torsion coil spring It is an elliptical shape having a vertical main axis, and the diameter of the elliptical shape is reduced with respect to the length direction of the torsion coil spring such that the spring hinge is compact along the length direction of the torsion coil spring. The collapsible container of claim 1, further comprising: a plurality of side panel supporting units, each of the side panel supporting units comprising a connecting bracket and a fastening rod, wherein the connecting bracket is disposed on the top panel Between the upper plate and the upper plate between the left side plate and the right side plate, and between the upper plate body and the lower plate body of the left side plate and the right side plate a front end and a rear end of the joint between the left side panel and the lower panel of the right side panel, the first end of the connection bracket being fastened to one of the associated pair of elements, a fastening rod mounted on the other of the associated pair of elements and resiliently removably inserted into a support aperture formed at a second end of the connection bracket, wherein the fastening rod is mounted in the shaft housing The rod case has a guiding groove extending along a length direction of the rod case and a locking groove extending from a rear end of the guiding groove in a circumferential direction, and the protruding handle is located at a predetermined portion of the fastening rod, the protruding handle is elastic Moving along the guiding groove or the locking groove to Inserting the fastening rod into the support hole of the connection bracket, thereby supporting the connection bracket and preventing the left side panel and the right side panel from being folded, or causing the fastening rod from the connection bracket The support hole is removed to release the connection bracket. The collapsible container of claim 15, the collapsible container further comprising a plurality of retaining rods disposed under the respective connecting brackets at the front end and the rear end of the bottom plate, each The retaining rod has a hinge pin and a fastening pin, the hinge pin being disposed at an upper portion of the retaining rod such that the retaining rod rotates around the hinge pin and elastically pulls out or retracts from the bottom plate In the bottom plate, the fastening pin protrudes inward from a lower end of the holding rod, so that the fastening pin can be inserted into the connection bracket fixed to the top plate when the container body is folded In the support hole, thereby maintaining the folded state of the container body. The collapsible container of claim 1, wherein at least one of the buckles disposed at a lower end of the left side panel and the right side panel of the container body is disposed on the left side panel and a clamping portion of the clip of the opposite end of the right side plate includes a double locking hook, the double locking hook includes a first locking hook and a second locking hook, the first locking hook and the second locking hook being rotatable with each other by the connecting ring Connecting, when the container body is folded, the first locking hook and the second locking hook are selectively locked on the bolt on the lower plate body of the corresponding side plate or locked in the The latch on the top plate, wherein the first locking hook of the double locking hook is elastically biased upward by a torsion spring to prevent the double locking hook from sagging and contacting the ground, and the supporting pin is Retracting retracted from one side of the clip to limit elastic rotation of the double hook, thereby preventing the double hook from contacting the lower portion of the corresponding latch of the side panel, thereby preventing obstruction The operation of folding the side panels onto the bottom panel. The collapsible container of claim 1, wherein at least one of the buckles disposed at a lower end of the left side panel and the right side panel of the container body is disposed on the left side panel and a clamping portion of the clip of the opposite end of the right side plate includes an upper locking hook and a lower locking hook, the opposite ends of the upper locking hook and the lower locking hook are connected to each other by a coil spring, and the upper locking hook and the lower hook The locking hooks are connected to each other with their opposite ends passing through the respective coil springs and locked to the respective opposite ends of the coil springs, so that when the first one of the left side panel and the right side panel is on the left side The coil spring elastically supports the unfolded second side panel when the second one of the panel and the right side panel is unfolded and unfolded, so that the second side panel can be prevented from being on the second side panel The junction with the bottom plate is biased toward the first side panel. The collapsible container according to claim 1 or 15, wherein the seat groove is formed in the upper plate body and the lower plate body of the top plate, the left side plate, and the right side plate, And a periphery of each of the contact surfaces between the bottom plates, and the seat grooves are filled with a silicone filler to ensure the upper plates of the top plate, the left side plate and the right side plate, and the a lower plate body and a seal between the bottom plates. The collapsible container of claim 1, wherein a guide surface having an inlet ramp on an outer side is formed on each of opposite ends of the inner surface of the front end plate and the rear end plate such that when the vehicle is to be When loaded into the container body, the vehicle can enter the container body along the guiding surface.